Advantech MIC-3369C Guía de instalación descargar pdf (Pagina 63)

Dialogic

System Release 6.1 CompactPCI for Windows

Release Update 63

value for some parameters and non-default values for other parameters. The

default settings for the two new QoS alarm types are:

Note: Only the fault thresholds are configurable; all other parameters must be set to

0. For information about setting the fault thresholds, see Section 1.19.2,

“Setting the Fault Thresholds”, on page 63.

c. Call ipm_SetQoSThreshold( ) to use the QoS parameter values set in step 1b.

2. Enable QoS alarms and start media streaming:

a. Call ipm_EnableEvents( ) to enable QoS monitoring for a list of alarm types.

(QoS monitoring for the new QoS alarms is disabled by default.) The events for

the two new QoS alarm types are:

EVT_RTCPTIMEOUT - timeout event indicating RTCP packets are no longer

being received

EVT_RTPTIMEOUT - timeout event indicating RTP packets are no longer being

received

b. Call ipm_StartMedia( ) to start media streaming and begin QoS monitoring.

3. Monitor QoS alarm notification events:

a. When a QoS alarm has been triggered, an IPMEV_QOS_ALARM event is

generated by the system. Call the Standard Runtime Library function

sr_getevttype( ) to return the event type.

b. Use Standard Runtime Library API functions such as sr_getevtdatap( ) to query

the IPM_QOS_ALARM_DATA structure to learn whether the alarm state is on or

off.

Note: For Dialogic

IPT Boards, the system software sends a QoS alarm event

containing ALARM_STATE_ON when a fault threshold is exceeded, but does

not report a QoS event containing ALARM_STATE_OFF when the threshold

returns to the programmed level. An RTCP/RTP timeout alarm is reset either

on resumption of RTCP/RTP packets, end of RTP session, or end of call, but

no notification is sent to the application when the alarm is reset.

4. Perform clean-up activities:

a. Call ipm_Stop( ) to stop media streaming.

b. Call ipm_DisableEvents( ) to stop QoS parameter monitoring.

1.19.2 Setting the Fault Thresholds

The fault thresholds in the IPM_QOS_THRESHOLD_DATA structure for the RTCP and

RTP timeouts can be set as follows:

QoS Type

Time

Interval (ms)

Debounce

On (ms)

Debounce

Off (ms)

Fault

Threshold

%Success

Threshold

%Fail

Threshold

QOSTYPE_

RTCPTIMEOUT

0 0 0 250(x100 msec

= 25 sec)

QOSTYPE_

RTPTIMEOUT

0 0 0 1200(x100

msec = 120

sec)

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 160 161

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Advantech MIC-3369C Guía de instalación Pagina 63

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